Loudoun County Demographics

A map of Loudoun County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	220,791	216,865	51.0%	51.5%
Asian	94,036	89,372	21.7%	21.2%
Hispanic	61,750	59,744	14.3%	14.2%
Black	32,463	29,725	7.5%	7.1%
Multiracial	20,046	22,065	4.6%	5.2%
Native American/Other	3,912	3,188	0.9%	0.8%

Loudoun County, Virginia has an estimated population of 432,998, a slight increase from the 420,959 recorded in the 2020 Census. The population is 51.0% White, 21.7% Asian, 14.3% Hispanic, 7.5% Black, 4.6% Multiracial, and 0.9% Native American/Other. This demographic dot map shows the population of Loudoun County, with one dot drawn for each person counted by the Census, color-coded by race.

Loudoun is about as racially diverse as it was in the 2020 Census. It is considerably more diverse than Virginia overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Loudoun County, that probability was 66.2% in 2020 and 66.5% in the most recent ACS estimates.

Loudoun County is ranked the 4th most populous county in Virginia, out of 133 counties. Loudoun County was ranked the 4th most populous county in the 2020 Census.

Loudoun County's White Population

220,791 residents of Loudoun County, or 51.0% of the population, identify as White. The share of White residents in Loudoun County is lower than in Virginia overall, where 58.4% of the population is White. Loudoun County ranks 109th statewide in terms of White residents as a share of the population, out of 133 counties.

Since the 2020 Census, Loudoun County's White population has grown by an estimated 1.8%. White residents' share of Loudoun County's population has decreased from 51.5% to 51.0%.

Loudoun County is more White than neighboring Manassas Park County (26.4% White), and Manassas County (33.3% White). Loudoun County is less White than neighboring Jefferson County (79.5% White), Clarke County (82% White), and Fauquier County (74.8% White).

Loudoun County's Black Population

32,463 residents of Loudoun County, or 7.5% of the population, identify as Black. The share of Black residents in Loudoun County is considerably lower than in Virginia overall, where 18.3% of the population is Black. Loudoun County ranks 88th statewide in terms of Black residents as a share of the population, out of 133 counties.

Since the 2020 Census, Loudoun County's Black population has grown by an estimated 9.2%. Black residents' share of Loudoun County's population has remained roughly unchanged at 7.5%.

Loudoun County is more Black than neighboring Jefferson County (5.6% Black), Clarke County (5.4% Black), and Fauquier County (6.3% Black). Loudoun County is less Black than neighboring Manassas Park County (13.6% Black), and Manassas County (11.8% Black).

Loudoun County's Asian Population

94,036 residents of Loudoun County, or 21.7% of the population, identify as Asian. The share of Asian residents in Loudoun County is considerably higher than in Virginia overall, where 6.9% of the population is Asian. Loudoun County ranks 1st statewide in terms of Asian residents as a share of the population, out of 133 counties.

Since the 2020 Census, Loudoun County's Asian population has grown by an estimated 5.2%. Asian residents' share of Loudoun County's population has increased from 21.2% to 21.7%.

Loudoun County is more Asian than neighboring Jefferson County (1.4% Asian), Clarke County (0.9% Asian), Manassas Park County (10.2% Asian), Manassas County (5.6% Asian), and Fauquier County (1.7% Asian).

Loudoun County's Hispanic Population

61,750 residents of Loudoun County, or 14.3% of the population, identify as Hispanic. The share of Hispanic residents in Loudoun County is slightly higher than in Virginia overall, where 11% of the population is Hispanic. Loudoun County ranks 13th statewide in terms of Hispanic residents as a share of the population, out of 133 counties.

Since the 2020 Census, Loudoun County's Hispanic population has grown by an estimated 3.4%. Hispanic residents' share of Loudoun County's population has remained roughly unchanged at 14.3%.

Loudoun County is more Hispanic than neighboring Jefferson County (7.8% Hispanic), Clarke County (7.8% Hispanic), and Fauquier County (12.4% Hispanic). Loudoun County is less Hispanic than neighboring Manassas Park County (46.8% Hispanic), and Manassas County (43.9% Hispanic).

Loudoun County's Native American/Other Population

3,912 residents of Loudoun County, or 0.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Loudoun County is comparable to the share in Virginia overall, where 0.8% of the population is Native American/Other. Loudoun County ranks 55th statewide in terms of Native American/Other residents as a share of the population, out of 133 counties.

Since the 2020 Census, Loudoun County's Native American/Other population has grown by an estimated 22.7%. Native American/Other residents' share of Loudoun County's population has remained roughly unchanged at 0.9%.

Loudoun County is more Native American/Other than neighboring Jefferson County (0.7% Native American/Other), Manassas Park County (0% Native American/Other), Manassas County (0.4% Native American/Other), and Fauquier County (0.6% Native American/Other). Loudoun County is less Native American/Other than neighboring Clarke County (1.2% Native American/Other).

Loudoun County's Multiracial Population

20,046 residents of Loudoun County, or 4.6% of the population, identify as Multiracial. The share of Multiracial residents in Loudoun County is comparable to the share in Virginia overall, where 4.7% of the population is Multiracial. Loudoun County ranks 16th statewide in terms of Multiracial residents as a share of the population, out of 133 counties.

Since the 2020 Census, Loudoun County's Multiracial population has declined by an estimated 9.2%. Multiracial residents' share of Loudoun County's population has decreased from 5.2% to 4.6%.

Loudoun County is more Multiracial than neighboring Clarke County (2.8% Multiracial), Manassas Park County (3% Multiracial), and Fauquier County (4.2% Multiracial). Loudoun County is less Multiracial than neighboring Jefferson County (5% Multiracial), and Manassas County (5.1% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.